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The Microsoft Lync 2013 SDK includes the Lync 2013 API, a managed-code (.NET) API that developers use to build applications that leverage the Microsoft Lync 2013 collaboration features. In addition to the Lync 2013 API, the Lync SDK includes a set of UI controls that can be used to add Lync features to a Microsoft Windows Presentation Foundation (WPF), or Microsoft Silverlight 4.0 application. The Lync 2013 SDK also ships with a set of working code samples and documentation to help you become a productive Lync developer as quickly as possible.

With the Lync SDK, you can quickly add Lync 2013 features to an existing business application, extend the Lync client itself or, if you have the need, build a custom UI built atop the Lync client platform. It is important to note the Lync SDK’s development model does require the Lync client to be installed on the user’s machine and the API is called from outside the Lync process, manipulating the same object model on which the Lync client is built.

Espero que os sea de utilidad!!!